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Finding the Fourth Proportional to 460,015.80, 690,023.70 and 400,966.80

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Solution

The fourth proportional to 460,015.80, 690,023.70 and 400,966.80 is: 601,450.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,015.80 : 690,023.70 = 400,966.80 : x
  2. Step 2: Convert to fraction form
    460,015.80/690,023.70 = 400,966.80/x
  3. Step 3: Cross multiply
    460,015.80x = 690,023.70 × 400,966.80
  4. Step 4: Simplify right side
    460,015.80x = 276,676,594,913.16
  5. Step 5: Solve for x
    x = 276,676,594,913.16/460,015.80
  6. Step 6: Final answer
    x = 601,450.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.